Rotary machine



y 1942- J. s. MORGAN, JR ETAL 2,282,778

ROTARY MACHINE Original Filed March 1, 1937 Patented May 12, 1942 N T TES P TEN gOF ICE 2,282,778 ROTARY MACHINE John S. Morgan, Jr., Herniosa Beach, and John D. Spalding, Los Angeles, Calif., assignors to The National Supply Company, Pittsburgh, Pa., a corporation of Pennsylvania I Original application March 1, 1937, Serial No.

128,468. Divided and this application Decemher 5, 1939, Serial No. 307,626 I 7 2 Claims.

This invention relates to rotary machines of the type used in the drilling of wells, and is more particularly related to a rotary machine of the enclosed type constructed to meetthe'present demands of deep drilling operations.

This application is a division of our co-pending application, Serial No. 128,468, filed March 1, 1937, for Rotary machine, now Patent No. 2,205,269.

An object of our invention is to provide an enclosed rotary machine wherein a unitary pinion shaft assembly is provided and wherein the rotary machine is constructed in such a manner as to permit this assembly to be "mounted with relation to the base and the table in such a manner that amore eflicient structure of rotary machine maybehad.

Another object of our invention is to provide a rotary machine of the enclosed type including a rotary table, a base upon which the rotary table is rotatably mounted, and a unitary pinion shaft assembly which is adapted to be assembled with relation to the table and the base in such a manner that the structure may meet the presently increasing demands for high speed table operation so that the pinion, of increased size requisite for such operation; may be properly positioned with relation to the table gear and held in proper alignment with relation to the base structures.

Other objects and advantages of this invention .tion 4 is formed with the outer closing rim II forming an enclosure with the table I in which the bearings 6 and I are lubricated by-anysuitable means and enclosed-against the admission of foreign matter. The outer annular rim-II forms with the table -I a labyrinth seal I2, The lower base member or primary section 4 of the'base may'be, as is illustrated, cast integrally with they skids I3 upon which the rotary machine is supported. The lower'base memberll is provided with an annular flange I l adapted for connection with the corresponding flange portion It on the base portion l I The lower base member 4' is also formed with the substantially rectangular closure portion I5 corresponding in plan to pinion shaft housing v portion I6 of the upper base member or secondary -section 4 and provides a closure flange il it is believed will be apparent from the following detailed description of a preferred embodiment thereof as illustrated in the accompanying drawmg.

In the drawing:

Figure 1 is a side elevation of a rotary machine embodying our invention and shown partly in section, the section being taken substantially on line I-I as shown in Figure 2. This figure illustrates the position of the parts during assembly of the upper and lower sections of the base, the pinion and gear not yet being in mesh.

Figure 2 is a plan view of the lower base or closure structure of the rotary machine embodying our invention.

Figure 3 is a sectional end view taken substantially on the line 3-3 of Figure 2.

The rotary machine embodying our invention includes a rotary table I having a gear ring 2 secured thereto in any suitable manner. The table I is provided with a downwardly depending skirt 3 which extends through a vertical opening formed in the base 4. The base 4 is divided horizontally to form an upper base member I and a lower base member 4". The upper adapted to cooperate with the closure flange I8of the said portion I6 to form a fluid-tight closure and housing for the pinion shaft assembly I9. The flange I1 and the annular flange M are preferably formed as one continuous surface.

The pinion shaft assembly includes a pinion 20 secured to the pinion shaft 2| in position to mesh with the ring gear 2 of the table I. The pinion shaft assembly is provided at its outer end with a driving sprocket 22 which overhangs the base. Positioned between pinion 20 and sprocket 22 are bearing means for removably securingv pinion shaft assembly in position as a unit upon the base closure section 4 There are provided two spaced bearings 23, 23 spaced along the shaft 2| positioned within suitable bearing housings 24 which are adapted to be removably secured to the lower base member 4 by means of bolts 25. Interposed between the bearing housings 24 are suitable rotation lock members 26} The lower half of the base 4 is formed to include an oil retaining closure 30 cooperating with the base member l and enclosing section I6 of the base section 4 The entire assembly of the rotary machine ,2 rotatably supported upon the bearing 6. The upthrust bearing ring, together with the upthrust bearing 1 may be then moved in position and secured in position by any suitable means such as by the bolts 21. The pinion shaft assembly is positioned upon the lower base member 4' as an assembled unit. The table I and the base member 4 are then lowered in position with relation to the base member 4* and the pinion shaft assembly and are secured in position through the medium of suitable bolts 28 completing the assembly and the enclosure.

There is also formed between and 4 a pinion shaft seal 28 at the outer end of the shaft 2|, which seal is formed to permit of the small amount of vertical adjustment neces-, sary for the shaft 2|. It will be obvious that'by use of suitable shims 30 interposed between the bearing housing 24 and the base flange I? that adjustment of the pinion 20 with relation to the gear ring 2 may be had.

Having fully described our invention, it is to be understood that we do not wish to be limited to the details herein set forth, but our invention is of the full scope of the appended claims.

'We claim:

1. In a rotary machine of the enclosed type, the combination of an upper base member having an annular upstanding wall, a table rotatably mounted on thrust bearings carried by said member and cooperating with the upstanding wall to form an annular chamber within the wall, a gear on the table within the chamber, a shaft having a pinion thereon adapted to drive the gear, bearings for rotatably supporting the shaft, a laterally extending drive shaft housing integrally joined to said annular upstanding wall below the upper limit thereof, a lower base member comprising an integral structure including parallel skid elements extending adjacent and parallel to the drive shaft housing, an oil retaining closure member extending between the skid elements below the drive shaft housing, a horizontal supporting flange surface on the lower base member, amating surface on the upper base member adapted to rest ,on said flange surface and to be dethe sections 7 tachably secured thereto, the laterally extending drive shaft housing and the oil retaining closure member being provided with cooperating parts adapted to meet along a horizontal joint when said mating surface and supporting flange surface are in contact, the shaft, pinion, and bearings being enclosed between the drive shaft housing and the oil retaining closure, whereby they may be removed in a direction transverse to the shaft axis upon separation of the upper and lower base members.

"2. Ina rotary machine of the enclosed type, the combination of an upper base member having an annular upstanding wall, a table rotatably mounted on thrust bearings carried by said member and cooperating with the upstanding wall to form an annular chamber within the wall, a gear on the table within the chamber, a shaft having a pinion thereon adapted to drive the gear, bearings for rotatably supporting the shaft, a laterally extending drive shaft housing integrally joined to said annular upstanding wall below the upper limit thereof, a lower base member comprising an integral structure including parallel skid elements extending adjacent and parallel to the drive shaft housing, an oil retaining closure member extending between the skid elements below the drive shaft housing, a central opening'in the lower base member through which said table may extend, a substantially circular horizontal supporting flange on the lower base member encircling the said opening, a mating surface on the upper base member adapted to rest on said flange and to bedetachably secured thereto, the laterally extending drive shaft housing and the oil retaining closure member being provided with cooperating parts adapted to meet along a'horizontal joint when said mating surface and supporting flange are in contact, the shaft, pinion and bearings being enclosed between the drive shaft housing and the oil retaining closure, whereby they may be removed in a. direction transverse to the shaft axis upon separation of the upper and lower base members.

' JOHN S. MORGAN, JR.

JOHN D. SPALDING. 

